中文摘要：

根据船舶直流电网的组成,分析了柴油机（原动机）调速系统、同步发电机励磁系统和三相整流模块,并在此基础上建模。利用Matlab/Simulink建立仿真模型,在发电机空载、稳定带载、突变负载情况下进行仿真实验。仿真结果表明,在加、减负载时船舶直流电力系统具有稳定性。

英文摘要：

According to the composition of DC power supply system in a ship,a diesel generator（original motive）speed regulating system,a synchronous generator excitation system and a three-phase rectifier module are analyzed and modeled.Using Matlab/Simulink,simulations of generators are carried out for the cases without load,with a stable load and with an abruptly changing load.The results show that the ship＇s DC power system is stable either when the load is increased or decreased.